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Alteration of Adsorption Selectivity of LSX Zeolite in Li+ and H+ forms towards CO2 and N2O LSX分子筛对Li+和H+形态CO2和N2O吸附选择性的改变
Catalysis for Sustainable Energy Pub Date : 2017-11-27 DOI: 10.1515/cse-2017-0006
A. Leonova, M. S. Mel'gunov
{"title":"Alteration of Adsorption Selectivity of LSX Zeolite in Li+ and H+ forms towards CO2 and N2O","authors":"A. Leonova, M. S. Mel'gunov","doi":"10.1515/cse-2017-0006","DOIUrl":"https://doi.org/10.1515/cse-2017-0006","url":null,"abstract":"Abstract The adsorption and textural properties of LSX zeolite after cation exchange both in LiCl and NH4Cl aqueous solutions have been evaluated from elemental analysis, XRD, N2 adsorption at 77K, and CO2 and N2O adsorption at 273K. Incorporation of Li+ and H+ results in a significant decrease of adsorption selectivity towards CO2 in a pressure range 0.01 - 1 Torr compared to the initial LSX in the K-Na form. This feature allows simultaneous quantitative sequestration of CO2 and N2O traces from contaminated gas flows, or can be useful for pre-concentration of these gases prior to catalytic utilization. Above 1 Torr adsorption selectivity rises to 1.0 for the unmodified LSX, but incorporation of Li+ and H+ increases it in the range 5 - 50 Torr, allowing adsorption purification of N2O from CO2 diluted an in inert gas flow under the applied conditions.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"34 1","pages":"31 - 35"},"PeriodicalIF":0.0,"publicationDate":"2017-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90488138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Temperature effect on the physicochemical properties of χ-alumina interaction with CCl4 温度对χ-氧化铝与CCl4相互作用理化性质的影响
Catalysis for Sustainable Energy Pub Date : 2017-11-27 DOI: 10.1515/cse-2017-0007
S. Yashnik, A. Salnikov, N. Shikina, A. V. Ischenko, I. Prosvirin, G. S. Litvak
{"title":"Temperature effect on the physicochemical properties of χ-alumina interaction with CCl4","authors":"S. Yashnik, A. Salnikov, N. Shikina, A. V. Ischenko, I. Prosvirin, G. S. Litvak","doi":"10.1515/cse-2017-0007","DOIUrl":"https://doi.org/10.1515/cse-2017-0007","url":null,"abstract":"Abstract The main characteristics in the formation of morphological, textural and acidic properties of the catalysts obtained by thermal treatment of χ-Al2O3 in a flow of carbon tetrachloride over the temperature range of 200 - 500°C were revealed. It was found that the sorption capacity of χ-χ-Al2O3 with respect to chloride ion depends nonlinearly on the temperature of interaction with CCl4. The sorption capacity increases when the temperature is raised from 200 to 400°C, and then decreases with the temperature elevation to 500°C due to an increase in the formation rate of aluminum chloride and high volatility of bulk AlCl3. The analysis of some models describing the sorption kinetics of chloride ions on χ-Al2O3 revealed that experimental data obtained at 200 and 300°C are well approximated within the pseudo-second order model. The calculated parameters of thermodynamic models (Langmuir, Freundlich, Temkin and Dubinin- Radushkevich) showed that the chlorination of χ-Al2O3 with carbon tetrachloride proceeds by the chemisorption mechanism. The observed characteristics in the formation of main physicochemical properties are caused by the chemistry of reactions proceeding on the surface and in the bulk of χ-Al2O3 particles upon interaction with carbon tetrachloride.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"32 1","pages":"36 - 51"},"PeriodicalIF":0.0,"publicationDate":"2017-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79840485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Composition of Surface Adsorbed Layer of TiO2 Stored in Ambient Air 环境空气中TiO2表面吸附层的组成
Catalysis for Sustainable Energy Pub Date : 2017-11-01 DOI: 10.1515/cse-2017-0005
V. Zakharenko, M. Lyulyukin, D. Kozlov
{"title":"Composition of Surface Adsorbed Layer of TiO2 Stored in Ambient Air","authors":"V. Zakharenko, M. Lyulyukin, D. Kozlov","doi":"10.1515/cse-2017-0005","DOIUrl":"https://doi.org/10.1515/cse-2017-0005","url":null,"abstract":"Abstract The processes of dark, UV, and visible light promoted desorption of surface species were investigated for three different TiO2 samples: TiO2 prepared by dispersion of the titania single crystal, TiO2 prepared by combustion of a pyrotechnic mixture in air, and commercial TiO2 P25. The composition of the adsorbed layer was identified in the dark and under UV and visible light irradiation. The composition of desorption products showed the dependence of the adsorption layer state on the TiO2 nature. Methane photodesorption was detected only for the commercial TiO2 P25. Possible reasons for methane emission include the capturing of complete molecules during the TiO2 production process and photocatalytic hydrogenation of CO2 under UV-light.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"43 1","pages":"25 - 30"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80756960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Catalytic steam reforming of ethanol over W-, V-, or Nb–modified Ni-Al-O hydrotalcite-type precursors W-， V-或nb -改性Ni-Al-O水滑石型前驱体上乙醇的催化蒸汽重整
Catalysis for Sustainable Energy Pub Date : 2017-10-26 DOI: 10.1515/cse-2017-0004
E. V. Korneeva, T. Kardash, V. Rogov, E. Smal, V. Sadykov
{"title":"Catalytic steam reforming of ethanol over W-, V-, or Nb–modified Ni-Al-O hydrotalcite-type precursors","authors":"E. V. Korneeva, T. Kardash, V. Rogov, E. Smal, V. Sadykov","doi":"10.1515/cse-2017-0004","DOIUrl":"https://doi.org/10.1515/cse-2017-0004","url":null,"abstract":"Abstract 2:1 Ni/Al layered double hydroxides (LDH) doped by anions using ammonium salts (NH4)10[W12O41], NH4VO3 or (NH4)3[NbO(C2O4)3] have been prepared by co-precipitation, dried and calcined at 600оС, forming NiO-based solid solutions. Diffraction patterns are typical for the layered Ni-Al-O hydrotalcite-like structure. Anion incorporation into the interlayer space increases the interlayer distance for W- and Nb-containing anions but decreases it for VO3 -1. Broad halos in the diffraction patterns indicate amorphous or strongly disordered phases containing the doping anions. H2 reduction of undoped Ni-Al-O (NA) and those doped by W (NAW) and Nb (NANb) occurred in one step, while that doped by V (NAV) was reduced in two steps. W doping increases the reduction temperature, but Nb doping decreases it. The hydrogen consumed increases in the row: NANb < NAW < NAV < NA. In the ethanol steam reforming reaction, modification by W and Nb anions results in ethanol conversion rates close to that of the unmodified sample, but V increases it nearly twofold.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"235 1","pages":"17 - 24"},"PeriodicalIF":0.0,"publicationDate":"2017-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77012404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Mechanochemically synthesized LiAlOx catalyst for aqueous aldol condensation of furfural with acetone 机械化学合成糠醛与丙酮缩合LiAlOx催化剂
Catalysis for Sustainable Energy Pub Date : 2017-10-26 DOI: 10.1515/cse-2017-0003
L. N. Stepanova, R. Mironenko, O. Belskaya, V. Likholobov
{"title":"Mechanochemically synthesized LiAlOx catalyst for aqueous aldol condensation of furfural with acetone","authors":"L. N. Stepanova, R. Mironenko, O. Belskaya, V. Likholobov","doi":"10.1515/cse-2017-0003","DOIUrl":"https://doi.org/10.1515/cse-2017-0003","url":null,"abstract":"Abstract In the present study, the mechanochemical method is proposed for synthesis of LiAl-layered double hydroxides (LDHs). This method is eco-friendly and allows obtaining LiAl-LDH under relatively mild conditions (centripetal acceleration of milling bodies 300 m s-2) and in a short period of time (15 minutes). The structures of as-prepared LiAl-LDH, LiAl-mixed oxide (calcined LDH) and “activated” LiAl-LDH obtained after rehydration of the corresponding mixed oxide were confirmed by X-ray diffraction. The basicity of LiAlOx was measured by temperature-programmed desorption of CO2 and double isotherm technique. According to data obtained, LiAl-mixed oxide has a significant higher carbon dioxide adsorption capacity compared to MgAlmixed oxides prepared by conventional co-precipitation method. This indicates a large amount of basic surface sites with different strength (strong, medium and weak) for Li-containing systems. The formation of “activated” LiAl-LDH having Bronsted basic sites (OH groups in the interlayer space) provides an increased catalytic activity of LiAlOx in the reaction of aqueous-phase aldol condensation between furfural and acetone.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"1 1","pages":"16 - 8"},"PeriodicalIF":0.0,"publicationDate":"2017-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82300534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Glass fiber supports modified by layers of silica and carbon nanofibers 玻璃纤维支架由二氧化硅和碳纳米纤维层修饰
Catalysis for Sustainable Energy Pub Date : 2017-04-01 DOI: 10.1515/cse-2017-0001
M. Popov, S. Zazhigalov, T. Larina, S. Cherepanova, A. Bannov, S. Lopatin, A. Zagoruiko
{"title":"Glass fiber supports modified by layers of silica and carbon nanofibers","authors":"M. Popov, S. Zazhigalov, T. Larina, S. Cherepanova, A. Bannov, S. Lopatin, A. Zagoruiko","doi":"10.1515/cse-2017-0001","DOIUrl":"https://doi.org/10.1515/cse-2017-0001","url":null,"abstract":"Abstract The new multi-layered composite was manufactured by deposition of the carbon nanofibers (CNF) at the surface of the glass-fiber fabric, which is pre-modified by application of additional external layers of NiO and porous silica. Carbonization of synthesized catalytic template was performed at 450 °C in propanebutane media at ambient pressure. CNF was deposited in amount of ~130% of initial template mass or 65 g per g of nickel, the specific surface area of the material is ~100 m2/g. The synthesized material has high mechanical strength, high hydrophobicity and strong bonding between CNF and glass-fiber support. The synthesis method is technologically simple, inexpensive and easily scalable. It is possible to manufacture such material in various solid shapes, using the flexibility of the primary glass-fiber support; in particular, it may be used for production of the mechanically self-sustainable catalytic cartridges with required shape and internal geometry using no additional structuring elements.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"64 1","pages":"1 - 6"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81090770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Retraction. One-pot synthesis of new Pyrido [2,3-d] Pyrimidine derivatives under ultrasonic irradiation using organo catalyst 4-Dimethylaminopyridine (DMAP) 收缩。超声辐照下有机催化剂4-二甲氨基吡啶(DMAP)一锅法合成新型吡啶[2,3-d]嘧啶衍生物
Catalysis for Sustainable Energy Pub Date : 2017-01-01 DOI: 10.1515/cse-2017-0002
I. R. Parrey, A. A. Hashmi
{"title":"Retraction. One-pot synthesis of new Pyrido [2,3-d] Pyrimidine derivatives under ultrasonic irradiation using organo catalyst 4-Dimethylaminopyridine (DMAP)","authors":"I. R. Parrey, A. A. Hashmi","doi":"10.1515/cse-2017-0002","DOIUrl":"https://doi.org/10.1515/cse-2017-0002","url":null,"abstract":"","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"42 1","pages":"7 - 7"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73711170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Carbonylation of Dimethyl Ether on Ag/ Cs1.5H1.5PW12O40: In-Situ FTIR Spectroscopy Study of the Ag-Carbonyls 二甲醚在Ag/ Cs1.5H1.5PW12O40上羰基化:Ag羰基的原位FTIR光谱研究
Catalysis for Sustainable Energy Pub Date : 2017-01-01 DOI: 10.1515/cse-2017-0009
G. G. Volkova, E. A. Paukshtis
{"title":"Carbonylation of Dimethyl Ether on Ag/ Cs1.5H1.5PW12O40: In-Situ FTIR Spectroscopy Study of the Ag-Carbonyls","authors":"G. G. Volkova, E. A. Paukshtis","doi":"10.1515/cse-2017-0009","DOIUrl":"https://doi.org/10.1515/cse-2017-0009","url":null,"abstract":"Abstract Halide-free carbonylation of dimethyl ether (DME) to methyl acetate over heterogeneous catalysts offers a potentially green route to the production of important industrial chemicals. Previously we have shown that the addition of 1% of silver to Cs1.5H1.5PW12O40 led to an increase in activity by a factor of two. Formation of silver carbonyl clusters on the surface of the catalyst was demonstrated by in situ FTIR spectroscopy. The v(CO) of silver carbonyl was observed at 2188 cm-1 and may be explained by the formation of cationic silver carbonyl Ag(CO)+ on the surface of the acidic cesium salt of 12-tungstophosphoric acid. In view of the increased efficiency, the novel bifunctional catalyst Ag/ Cs1.5H1.5PW12O40 is expected to hold significant promise for practical use in new processes of basic organic chemistry.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"37 1","pages":"59 - 61"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90110470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
One-pot synthesis of new Pyrido [2,3-d] Pyrimidine derivatives under ultrasonic irradiation using organo catalyst 4-Dimethylaminopyridine (DMAP) 超声辐照下有机催化剂4-二甲氨基吡啶(DMAP)一锅法合成新型吡啶[2,3-d]嘧啶衍生物
Catalysis for Sustainable Energy Pub Date : 2016-12-30 DOI: 10.1515/cse-2016-0002
I. R. Parrey, A. A. Hashmi
{"title":"One-pot synthesis of new Pyrido [2,3-d] Pyrimidine derivatives under ultrasonic irradiation using organo catalyst 4-Dimethylaminopyridine (DMAP)","authors":"I. R. Parrey, A. A. Hashmi","doi":"10.1515/cse-2016-0002","DOIUrl":"https://doi.org/10.1515/cse-2016-0002","url":null,"abstract":"Abstract The one-pot synthesis of pyrido[2,3-d] pyrimidine derivatives has been reported via Knoevenagel-Michal addition pathways using substituted aromatic aldehydes, Cyanoacetamide and 6-aminouracil in N,N-dimethylformamide (DMF) solvent, with 4-dimethylaminopyridine (DMAP) as new organo catalyst catalyst under ultrasonic irradiation. The results showed that a series of aromatic aldehydes were effectively used to prepare the targeted pyrido [2, 3-d] pyrimidine derivatives with good to excellent yields (81-93 %) with no major effect on the yield of product by electron donating/withdrawing substituents. Short reaction time, environment friendly procedure, excellent yields, inexpensive and readily available catalyst are the advantages of this procedure. All synthesized compounds were characterized by IR, 1HNMR, 13CNMR and mass spectral data.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81946061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Production of bio-aromatics from ethanol-waste cooking oil mixtures over ZSM-5 catalyst material ZSM-5催化剂催化乙醇-废食用油混合物生产生物芳烃的研究
Catalysis for Sustainable Energy Pub Date : 2016-05-01 DOI: 10.1515/cse-2018-0003
Elvis Tinashe Ganda, Y. Isa
{"title":"Production of bio-aromatics from ethanol-waste cooking oil mixtures over ZSM-5 catalyst material","authors":"Elvis Tinashe Ganda, Y. Isa","doi":"10.1515/cse-2018-0003","DOIUrl":"https://doi.org/10.1515/cse-2018-0003","url":null,"abstract":"Abstract The utilisation of ethanol-waste cooking oil (Eth- WCO) mixtures for the production of valuable chemicals has been considered. The study investigated the potential of synthesised HZSM-5 in the conversion of ethanol-oil mixtures to fuel-range hydrocarbons. HZSM-5 catalyst material was successfully synthesised and characterised and activities were tested in a fixed-bed reactor unit at temperatures of 400°C and 450 °C with a fixed weight hourly space velocity of 2.5 h-1 at atmospheric pressure. The synthesised catalyst had total surface area greater than 250 m2/g. From the catalyst activity test, it was observed that up to 93% conversion was achieved on the synthesised catalysts. The conversion product was rich in aromatic compounds such as p-xylene, toluene and naphthalene that have potential as feedstock in the chemical and petrochemical industries. The FeZSM-5 catalyst material had a generally higher percentage composition of p-xylene content, peaking at 30% at 400°C for pure waste cooking oil feedstock. Potential catalysts for bio-aromatics production from ethanol-waste cooking oil mixtures have been successfully synthesised and evaluated.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"6 1","pages":"19 - 27"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82225284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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